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Sunday, May 2, 2010

April 28 - First Evidence That Mirror Matter May Fill the Universe?‏

Dear Friends,

Paste/click the link if you can't access the links.

http://www.technologyreview.com/blog/arxiv/25100



Be Well.

David

First Evidence That Mirror Matter May Fill the Universe?

If dark matter exists it may take the form of mirror planets, mirror stars and mirror galaxies. Now one physicist says the most recent evidence seems to confirm this idea

When astronomers study distant galaxies, they see only a small fraction of the mass needed to hold these clumps of stars together. Without some kind of extra hidden mass, galaxies ought to fly apart.

Astronomers call this hidden mass 'dark matter' and physicists around the world are engaged in an increasingly desperate race to find evidence of it here on Earth. That's why there are more than 30 experiments in various parts of the planet looking for the stuff.

The consensus is that, despite this global effort, dark matter remains well hidden. Nobody has had a whiff of the stuff.

That is nobody except an Italian group which has spent the last ten years or so watching a giant lump of sodium iodide. Their thinking is that any dark matter hitting the sodium iodide should generate a photon. And that as Earth moves around the Sun, they should see more photons when heading into the background sea of dark matter than when moving away from it.

Sure enough, this seasonal signal is exactly what this team says it sees. They claim that it's experiment called DAMA/LIBRA is the first direct evidence of dark matter.

The trouble is that nobody else believes them, mainly because so many other experiments have seen nothing. The critics says something else must be responsible for these seasonal signals, perhaps some kind of environmental change like a variation in temperature.

Then, about a month ago, everything changed when an experiment called CoGent based in the US reported that it too had found a hint of dark matter. CoGent looks for evidence that dark matter particles have bumped into a crystal of germanium and sure enough, the CoGent team say that the experiment is producing abundant evidence of these kinds of collisions.

Curiously, while most experiments are looking for relatively heavy dark matter particles which should produce higher energy collisions, CoGent looks for much lighter particles.

The interesting thing is that the DAMA\LIBRA evidence is from a similar mass range.

Now the theoreticians are attempting to reconcile the DAMA and CoGent results by finding a dark matter model that can explain them both. Last month, Liam Fitzpatrick at Boston University and a couple of mates suggested that a light, weakly interacting dark matter particle could explain both results.

And today, Robert Foot from the University of Melbourne has an even more interesting solution. He says that mirror matter could explain both. "This result adds weight to the mirror dark matter interpretation of the direct detection experiments," he says.

The theory behind mirror matter suggests that every particle in the standard model has a mirror equivalent that interacts with ordinary matter only very weakly.

However, mirror particles interact with each other in exactly the same way as ordinary particles. So in this scenario, the Universe is filled with mirror planets, stars and galaxies. That's a mind blowing idea.

Foot is one of the leading proponents of mirror matter and says other observations also point to its existence.

Perhaps the new evidence will tempt astronomers to look harder. If it exists, mirror matter ought to be observable in other ways. For example, its gravity should bend light causing microlensing events although distinguishing mirror matter microlensing events from the same thing caused by ordinary but dim matter will be hard.

Still, an interesting avenue to pursue.

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MUFON

How to Digitally Record/Video a UFO sighting:


Como registar digitalmente ou gravar um vídeo de um avistamento de um UFO:




Stabilize the camera on a tripod. If there is no tripod, then set it on top of a stable, flat surface. If that is not possible lean against a wall to stabilize your body and prevent the camera from filming in a shaky, unsteady manner.

Estabilize a camera com um tripé. Se não tiver um tripé, então coloque-a em cima de uma superfície estável. Se não for possível, então encoste-se a uma parede para estabilizar o corpo e evitar que a camera registe de maneira tremida e instável.

Provide visual reference points for comparison. This includes the horizon, treetops, lampposts, houses, and geographical landmarks (i.e., Horsetooth Reservoir, Mt. Adams, etc.) Provide this in the video whenever is appropriate and doesn’t detract from what your focus is, the UFO.

Forneça pontos visuais de referência para comparação. Isso inclui o horizonte, cimo das árvores, postes de iluminação, pontos de referência geográficos (como o Reservatório de Horsetooth, Mone Adams, etc) Forneça esses pontos no vídeo sempre que for apropriado e não se distraia do que é o seu foco, o UFO/a Nave.

Narrate your videotape. Provide details of the date, time, location, and direction (N,S,E,W) you are looking in. Provide your observations on the weather, including approximate temperature, windspeed, any visible cloud cover or noticeable weather anomalies or events. Narrate on the shape, size, color, movements, approximate altitude of the UFO, etc and what it appears to be doing. Also include any unusual physical, psychological or emotional sensations you might have. Narrate any visual reference points on camera so they correlate with what the viewer will see, and thereby will be better able to understand.

Faça a narração do vídeo. Forneça pormenores sobre a data, hora, local e direcção (Norte, Sul, Este, Oeste) que está a observar. Faça observações sobre as condições atmosféricas, incluindo a temperatura aproximada, velocidade do vento, quantidade de nuvens, anomalias ou acontecimentos meteorológicos evidentes. Descreva a forma, o tamanho, a cor, os movimentos, a altitude aproximada onde se encontra o UFO/nave, etc e o que aparenta estar a fazer. Inclua também quaisquer aspectos pouco habituais de sensações físicas, psicológicas ou emocionais que possa ter. Faça a narração de todos os pontos de referência visual que o espectador irá ver e que, deste modo, será capaz de compreender melhor.

Be persistent and consistent. Return to the scene to videotape and record at this same location. If you have been successful once, the UFO sightings may be occurring in this region regularly, perhaps for specific reasons unknown, and you may be successful again. You may also wish to return to the same location at a different time of day (daylight hours) for better orientation and reference. Film just a minute or two under “normal” circumstances for comparison. Write down what you remember immediately after. As soon as you are done recording the experience/event, immediately write down your impressions, memories, thoughts, emotions, etc. so it is on the record in writing. If there were other witnesses, have them independently record their own impressions, thoughts, etc. Include in this exercise any drawings, sketches, or diagrams. Make sure you date and sign your documentation.

Seja persistente e não contraditório. Volte ao local da cena e registe o mesmo local. Se foi bem sucedido uma vez, pode ser que nessa região ocorram avistamentos de UFOs/naves com regularidade, talvez por razões específicas desconhecidas, e talvez possa ser novamente bem sucedido. Pode também desejar voltar ao mesmo lugar a horas diferentes do dia (durante as horas de luz)para ter uma orientação e referência melhor. Filme apenas um ,inuto ou dois em circunstâncias “normais” para ter um termo de comparação. Escreva tudo o que viu imediatamente após o acontecimento. Logo após ter feito o registo da experiência/acontecimento, escreva imediatamente as impressões, memórias, pensamentos, emoções, etc para que fiquem registadas por escrito. Se houver outras testemunhas, peça-lhes para registar independentemente as suas próprias impressões, pensamentos, etc. Inclua quaisquer desenhos, esbolos, diagramas. Certifique-se que data e assina o seu documento/testemunho.

Always be prepared. Have a digital camera or better yet a video camera with you, charged and ready to go, at all times. Make sure you know how to use your camera (and your cell phone video/photo camera) quickly and properly. These events can occur suddenly, unexpectedly, and often quite randomly, so you will need to be prepared.

Esteja sempre preparado, Tenha sempre uma camera digital, melhor ainda, uma camera vídeo consigo, carregada e pronta a usar sempre que necessário. Certifique-se que sabe como lidar com a sua camera (ou com o seu celular/camera fotográfica) rápida e adequadamente. Esses acontecimentos podem acontecer súbita e inesperadamente e, por vezes, acidentalmente, por isso, necessita estar preparado.

Look up. Be prepared. Report. Share.

Olhe para cima, Esteja preparado, Relate, Partilhe.

MUFON.COM

ESOTERIC



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